I let upgradeitis get the better of me and bought M60s and they were, IMO, not upto my M22's clarity/forwardness. So I auditioned a set of M80s and had a some fun A/Bing between the M22's, M60's, M80s, had I not done the direct comparison I do not believe I would have noticed nearly as much difference, only that the M80s are better suited to my listening tastes.